TWI497966B - Computer-readable memory and device for associating a telephone call with a dialog based on a computer protocol - Google Patents

Description

Computer readable memory and device for associating a telephone call with a conversation in accordance with a computer agreement Cross-reference to relevant applications

This patent application is a continuation of U.S. Patent Application Serial No. 11/205,762, filed on Aug. 15, 2005, entitled "ASSOCIATING A TELEPHONE CALL WITH A DIALOG BASED ON A COMPUTER PROTOCOL SUCH AS SIP. The US patent number of the case is No. 8,155,294, and the announcement date is April 10, 2012. This patent application is incorporated herein by reference in its entirety.

The present invention relates to a method and computer readable medium for associating a telephone call with a conversation in accordance with a computer protocol (such as SIP).

In the Public Switched Telephone Network (PSTN), it is common to use messaging to set up circuits, terminate conversations, and the like. For example, one of various protocols for PSTN is referred to as "Shared Channel Messaging System 7 (SS7)." In the PSTN, existing messaging protocols provide basic call setup and disassembly, accounting, wireless services and roaming, local number portability, pay-free calling services, caller ID, three-way calling, and call forwarding enhancement features. Waiting for support. However, these are now Some communication agreements only provide limited support. For example, for the Talker ID, there is no guarantee that the Talker ID information will be able to travel end-to-end. Another problem is that if the call originates from a private extension switch (PBX) extension, etc., the talker ID is not unique to a user. For example, when an Acme employee makes a call, the call may be identified as "Acme" instead of the employee.

Unlike the PSTN protocol, the Session Initiation Protocol (SIP) is not limited to communication during the setup phase. SIP is an application layer control protocol that computer systems can use to explore and build multimedia conversations. For example, SIP is one of the key agreements for making "voice over IP" technology. Implementing "voice over IP" technology typically involves translating voice information into digital form and transmitting it in discrete packets rather than in accordance with a convention associated with a traditional PSTN circuit. SIP is also associated with real-life messaging and other "immediate" communication technologies. For example, an instant messaging service allows participants to send messages and receive them in a second or two by other participants in a conversation. These recipients can then send responsive messages to other participants in a similar manner.

SIP is an Internet proposal standard. Its specification document, "RFC 3261", is available at http://www.ietf.org/rfc/rfc3261.txt. One of them has a SIP extension specification for event notification The document, "RFC 3265", is available at http://www.ietf.org/rfc/rfc3265.txt. A SIP network contains entities that can participate in a conversation as a client, server, or both. SIP supports up to four types of entities: user agent, proxy server, redirection server, and logger. The user agent can initiate and terminate the conversation by exchanging messages with other SIP entities. A user agent can be a User Agent Client (UAC), which is a device that initiates a SIP request, or a User Agent Server (UAS), which receives and responds to a SIP request. For such requested devices. As an example, an "IP phone", a personal digital assistant, and any other type of computing device can be used as a user agent. A device can be a UAC in one conversation and a UAS in another conversation, or can change roles during a conversation. A proxy server is a client for each client and a client for each server. In this way, the proxy server can intercept, interpret or transfer messages between each UAC and each UAS. A redirect server can accept a SIP request and generate a response that can direct the UAC that previously sent the request to an alternate network resource. A logger is a server that accepts the posting information from each user agent and notifies the location service of the received posting information.

SIP supports two types of messages: requests, which are sent from a UAC to a UAS; and responses, which are sent from a UAS to a UAC when responding to a request. And a SIP message is made up of It consists of three parts. The first part of a SIP message is a "request column" containing fields for representing a message method (ie, INVITE) and a "Request URI" that identifies the request to which the request is directed. User or service. The second part of the SIP message contains headers whose values are represented by pairs of name-value pairs. The third part of the SIP message is the body of the message, which is used to describe the conversation to be initiated or contains information associated with the conversation. The message body can appear in each request or response.

A method and system for associating a telephone call with a computer conversation, such as a Session Initiation Protocol (SIP), is provided. The dialog can be used to provide information associated with a telephone call at a computing device. Party A wants to send a message to Party B. Both A and B have computing devices and telephones. Using the communication processing between their computing devices, party A sends a request to initiate a telephone conversation with party B. If the request is accepted by the B-party computing device, a messaging phase of the computer conversation (i.e., a SIP Inviting Transaction Dialogue) can be established and an attempt to initiate a telephone conversation over a Public Switched Telephone Network (PSTN). After receiving the confirmation message that the telephone call is successfully established, assuming that the configuration is properly configured, the computing device of the A party and the computing device of the B party start a conversation session (ie, a SIP conversation). Can use this computer conversation (both during the messaging phase and during the conversation phase) Bottom) to send information about the A party and B party identification data, the status of the phone call, the status of each device associated with the phone call, and the like.

There are a number of system components available for setting up conversations, which may or may not be included in the communication application on the A or B party computing device; the active communication server, which may assist the A and B party computing devices Communication between the public; the various interfaces between the public switched telephone network and the computing devices; the components of the public switched telephone network (which may include PBXs), and the like.

This "Overview" is provided to introduce a selection concept that is further described in a more simplified form and described in the "Detailed Description" below. This “Overview” is not intended to identify key features or essential features of the claimed subject matter, nor is it used to assist in determining the scope of the claimed subject matter.

A facility (i.e., a software facility and related system) for associating a telephone conversation with a computerized conversation is provided. In some embodiments, the end-to-end (end-to-) may be established in conjunction with a telephone call placed on a "general old telephone network", such as the Public Switched Telephone Network (PSTN). End) SIP conversation. The facility can then synchronize the PSTN call state to the SIP dialog state. For example, the Talker can utilize the SIP dialog to identify the recipient. This allows the recipient to recognize the utterer, and This is also true when the call does not contain ID information. In addition, one or more fields can be used to extend the SIP to support the synchronization of the PSTN state to the SIP state. Examples of such extensions include one or more call information fields (ie, sent via a SIP INVITE), one or more call information response fields (ie, sent via a SIP 200 OK), and one or More call information matches the field (ie, sent via SIP ACK).

In some embodiments, when a user (talker) wants to place a call to a person (receiver) who is listed in his computer contact list, the person can select the contact, and Indicates that you want to make a call to the contact. At this point, an application on the Talker's computing device can send a request (ie, a SIP INVITE) to the recipient's computing device to initiate a messaging phase session. The request may include the telephone information being an indication of the characteristics of the conversation with the contact. The callee is aware of this and expects a telephone call from the Talker. If the receiving party's computing device replies with acceptance and indicates that the person can support the telephone information, the Talker's computing device can place a call through the telephone system and then wait until the person obtains a representation at the called party's telephone A reply message that starts ringing. Once the callee hears the phone ringing, the caller can expect that the call will come from the caller, and this will be true unless it is just before the call from the caller who sent the SIP message. A call from another caller. When the talker's computing device receives a pass After the call is answered and a computer exchange representation has been made, the talker's computing device knows that the PSTN telephone call has succeeded and simultaneously sends a computer message indicating success. The callee will then know at this point that the call is from the intended talker.

After the call is answered, a confirmation message is received, and a conversation phase computer conversation is established. Thus, information can be sent back and forth between the talker computing device and the callee computing device. This information may include a representation that the call has been held, deflected, or transferred.

Figure 1 is a block diagram showing the various components of the facility in a particular embodiment. In some embodiments, the facility includes an active communication server 100 that is coupled to one or more clients 150 and 175 via Internet 135. The active communication server 100 includes a presence server 105, which can be a SIP registrar that maintains status information about each user of the instant messaging service. The deposit server 105 can include a subscription component 115 and a deposit file repository 120. The subscription component 115 can maintain, for each user, a current user list that is subscribed to the user's presence information. The status information for each user can be expressed in the form of a file called a deposit file. The stored file repository 120 contains a stored file representing the current state of the user on the communication server 100 for the user.

A user profile server 110 contains for each user Persistent data and contains a contact list repository 125. The contact list repository 125 contains a list of contacts for each user. In some embodiments, the active communication server 100 can provide a user's contact list to the user's logged in endpoint. An example of such an endpoint includes client A 150 and client B 175, which may be associated with each human user. In some embodiments, the clients 150 and 175 include a communication application 155. The communication application 155 can include a subscription component 160, a login component 165, and a user interface component 170. The subscription component 160 can subscribe to the presence information of the contact of the user. The login component 165 can log the user's endpoint to the active communication server 100 and post each update item to the user's presence information. The user interface component 170 can provide windows, views, and other graphical requirements presented to the user when interacting with the communication application 155.

The facility can be associated with a PSTN network 130, and the phones (180 and 190) associated with each client can communicate over the network. Each of the phones 180 and 190 can also be associated with a conventional PBX 185 and 195. A remote call control (RCC) server 196 can, if desired, provide an interface between the PBX (or other PSTN component) and the client computing device. In this manner, the client computing device can be made aware of the activities performed at the PBX where a call is placed. For example, the remote call control server can act as a gateway for use by the communication application. The standard agreement is translated into a specific computer telephony integration (CTI) agreement supported by the PBX. Although not shown, one or more of the gateway components can facilitate communication through the PSTN 130. For example, a SIP-PSTN gateway can be provided to facilitate a call between a computing device and a telephone.

Each computing device implemented on the facility may include a central processing unit, a memory, an input device (ie, a keyboard and a pointing device), an output device (ie, a display device), and a storage device (ie, a disk drive) ). The memory and storage device is a computer readable medium, which may contain instructions for implementing the system. In addition, the data structures and message structures can be stored or transmitted through a data transmission medium such as a signal on a communication link. Various communication links can be used, such as internet, regional network, wide area network, point-to-point dial-up connection, mobile phone network, and the like.

Specific embodiments of the facility can be implemented in a variety of operating environments, including personal computers, server computers, handheld or laptop devices, multi-processor systems, microprocessor-based systems, and programmable consumer electronics Devices, digital cameras, VoIP calls, mini computers, host computers, decentralized computing environments containing any of the above systems or devices, and the like. Each computer system can be a mobile phone, a personal digital assistant, a smart phone, a personal computer, a programmable consumer electronic device, a digital camera, and the like.

The system can be executed by one or more computers or other devices in a general context, such as computer-executable instructions, such as program modules. Described. In general, each program module contains subroutines, programs, objects, components, data structures, etc. that can perform specific tasks or implement specific abstract data types. In general, the functionality of the various program modules may be combined or distributed as desired in various embodiments.

Figure 2 is a network diagram showing a communication flow between the two clients (such as client A 150 and client 175 of Figure 1) in the SIP dialog establishing program 200 (i.e., Each message contains a method and a response, where the client A calls the client B through the PSTN. There was no competition in the communication process of Figure 2 (such as a competition caused by a third party attempting to make a call). In the specific embodiment, the CST ECMA-269 call control abstraction (used by each computing application to monitor and control a switching system such as a PBX) for PSTN signaling (using a dotted arrow) representative). In some embodiments, the signaling process is implemented at an individual PBX and may be associated with a remote call control server. Although depicted as traveling from the client to the client, the SIP message (that is, displayed by the solid line) described in FIG. 2 can be additionally transmitted through the communication server 100 as shown in FIG. The shared server is transmitted. The time is moved toward the bottom of the graph so that the message at the top of the graph will be sent earlier than the bottom.

The process begins with the client A sending a SIP INVITE 205 and the same standard SIP Invite header and one pass. Message header. The fields in the message 205 may include a caller's telephone universal resource identifier (URI), a called telephone URI, a selected caller ID (such as a company number), and a call type (ie, ordinary, Fee consultants, meetings, etc.) and so on. In response to this, there is a potential opportunity for SIP connectivity between the client A and the client B. In response, the client B sends a SIP 183 (in progress) response 210 containing a "supported phone" header. . This project represents the beginning of the messaging phase of a SIP conversation. At this point, the client B can expect to receive a call from the client A. If the client A cannot communicate with the client B through the SIP (ie, if there is no available address, no alliance, etc.), the client A will not receive a SIP 183 (in progress), but will Received a 4xx response code (indicating an error).

The next five communications (215, 220, 225, 230, and 235) indicate the communications made for the PSTN. If a remote communication control server is used, the communication can be communicated between the remote call control server and individual clients. Alternatively, it can be directly transmitted between a PBX and individual clients. In the particular embodiment, the first of these communications is a "Make Call" service request signal 215. This signal may be associated with assigning a connection ID to the handset. The client A then receives a "Make Call" response signal 220 followed by an "Originated" signal 225. A "Delivered" signal 230 received by the client B (received from the client B's PBX or RCC) corresponds to the client B. The phone rings. The client A also receives a "Delivered" signal 235 indicating a ringing event.

After both client A and client B have received the "Delivery" signal, client B sends a SIP 180 (ringing) response 240. This response can include a support phone header. Similarly, in some embodiments, before client B sends a SIP 180 (ringing) in response to the client A, the client A may first send a SIP 180 (ringing) response to the client. End B, which contains identification information that enables the client B to know who is speaking.

When the user associated with the client B actually answers the ringing phone, the client B sends a SIP 200 OK response 245. In addition to a support phone header, the fields in response 245 may also include a caller's telephone universal resource identifier (URI), a called telephone URI, and a status field.

By answering the ringing call, the user associated with the client B initiates a further PSTN call. For example, both Client B and Client A can receive an "Established" signal (250 and 255, respectively) from their respective PBX/RCC. Due to the result of this transmission, the client A sends a SIP ACK 260. The SIP ACK 260 indicates the end of the INVITE transaction and the end of the conversation phase session. In addition to the header information, this ACK can also contain information about a matching flag. This allows the client B to associate the call with a SIP URI and talk to it. Windows, thereby establishing a SIP call phase dialogue.

Figure 3 is a network diagram showing a communication flow between the two clients (such as client A 150 and client 175 of Figure 1) in the SIP dialog establishing program 300 (i.e., Each message contains a method and a response, where the client A calls the client B through the PSTN. The communication process in Figure 3 is performed when a competition situation occurs. In more detail, a third caller C is attempting to dial a call associated with the client B at the same point in time when the client A attempts to dial the call to the client B. That is, as shown in Fig. 2, in the specific embodiment of Fig. 3, the ECMA-269 call control abstraction is performed for each PSTN transmission (indicated by a dotted arrow). In some embodiments, the signaling process is implemented at an individual PBX and may be associated with a remote call control server. Although described as traveling from the client to the client, the SIP message in Figure 3 (that is, as indicated by the solid line) can be passed through an active communication server as shown in Figure 1. The shared server is transmitted.

The process begins with the client A sending a SIP INVITE 305 with the same standard SIP Invite header and a call message header, thus initiating a SIP messaging session. In response to this, the B sends a SIP 183 (in progress) response 310 containing a "Supported Phone" header. In the next three communications (315, 320, and 325), the client A will communicate with the PBX/RCC during an attempt to set up a PSTN call. However, before proceeding, the hair The caller C has already sent a call to the client B. Therefore, when the "Make Call" service request signal 315, the "Make Call" response signal 320, and the "Originated" signal 325 are normally performed, after the call of the C is delivered to the client B, the Client A will quickly receive a "Failed" signal 335. At this point, the client B expects the ringing phone to be from the client A. The client B can then answer the call, and there will be some subtle risks that the caller is not the client A. In response to this, the client A can send a SIP CANCEL 340 to the client B. At this point, the client B learns that the call is not from the client A. This will end the process of establishing the SIP talk phase session. At the same time, the user associated with the client B answers the call from the caller C and receives an "Established" signal 345 for the call to the C from the PBX/RCC.

Figure 4 shows, in a specific embodiment, the contents of an INVITE message 400 transmitted from a first SIP client (sender) to a second SIP client (recipient) via the active communication server. The INVITE message 400 includes an IP header 405, a TCP header 410, and a SIP message 412. For the underlying transport, protocols other than TCP/IP can be used. The SIP message 412 includes a SUBSCRIBE method request column 415, a "From" header 420, a "To" header 425, a "Caller Tel URI" header 430, and a "Called Tel URI" header 435. One A "Supplemental Caller ID" header 440, a "Call Type" header 445, a "Supported" header 450, and a "Content-Length" header 455. The "From" header 420 identifies the transmitting client computing device (the talker). The "To" header 425 calibrates which endpoint (the recipient) the sender of the packet is currently subscribed to. The "Caller Tel URI" header 430 calibrates the caller's phone, and the "Called Tel URI" header 435 identifies the callee's phone. The "Supplemental Caller ID" header 440 provides an alternate "Caller ID" (i.e., the ID of the company associated with the talker) and is an option. The "Call Type" header 445 calibrates the type of the call, which can be, for example, a normal call, a conference call, a billing advisor call, and the like. The "Supported" header 450 calibrates any special behavior supported by the sender. The "Content-Length" header 455 has a value of 0, which means that there is no data followed by the SIP message header. However, in an alternative implementation, some of the information contained in each header (ie, "Caller Telephone URI", "Supplemental Caller ID") may be provided separately within the message material.

Figure 5 shows the contents of an INVITE response 500 sent by a callee (via the active communication server) to a SIP client in one embodiment. The INVITE message 500 includes an IP header 505, a TCP header 510, and a SIP message 515. For the underlying transport, protocols other than TCP/IP can be used. The SIP message 515 includes a SIP response identifier 520, a "To" Header 525, a "From" header 530, a "Caller Tel URI" header 531, a "Called Tel URI" header 532, a "Status" header 533, a "CSeq" header 535, and a "" The Supported header 540 and a "Content-Length" header 545. The SIP response identifier 520 can identify the SIP version 2.0 and indicate the request status of the subscription job as successful (ie, 202 "Accepted"). The "To" header 525 specifies the endpoint to which the original sender of the request has subscribed. The "From" header 530 calibrates the original sender of the request. The "Caller Tel URI" header 531 calibrates the caller's phone, and the "Called Tel URI" header 532 calibrates the callee's call. The "Status" header 533 calibrates the status of the caller's call system. The "CSeq" header 535 is included in the message from each request and reply of the active communication server and is used as a sequence number for determining the relative order of messages from the server. Different serial numbers can be generated for each SIP dialog, and the sequence number can typically calibrate the type of request that generated the dialog. For example, the "CSeq" header 535 has a value of 1 INVITE, indicating that the servo is from the session generated by an INVITE request from among the endpoints calibrated by the "To" and "From" headers. The first message of the device. A message with a lower sequence number is sent from the server earlier than the one with a higher sequence number. The "Supported" header 540 calibrates any special behavior supported by the sender. The "Content-Length" header 545 has a The value 0, which is followed by the 0-bit data of the SIP message header. However, in an alternative implementation, some of the information contained in each header (ie, "Caller Telephone URI", "Called Telephone URL", etc.) may be provided separately within the message material. .

Figure 6 is a flow diagram illustrating a routine 600 at the Talker Computing Device to establish a SIP dialog associated with a telephone call. The example 600 is enabled when a caller attempts to place a call using a communication application at its client computing device. At block 605, the example 600 generates and transmits a SIP INVITE message, which may be, for example, sent to an active communication server to establish a connection with a client computing device of the recipient. This scenario assumes that the called party's client computing device is configured to perform SIP communications. If not, the phone call feature of the call can continue, but the SIP dialog is not established.

At block 610, the SIP messaging phase session is established and the instance receives a "SIP Session Progress" (183) response from the server. At block 615, the Talker client computing device transmits and receives one or more PSTN signals, which may include a "Make Call" signal, a "Make Call" response signal, an "Originated" response signal, and a " Delivery" response signal and so on. As mentioned above, these signals can be directly or through a remote call control (RCC) interface at the client and the Pass between PBX. At decision block 620, if the signals at block 615 contain a "Failed" response signal, this indicates that the PSTN call processing failed, and the example continues to block 625 to send a SIP cancel message, which will Any further attempts to establish a SIP session (or otherwise, continuing the SIP session, but the fact that a call can be attempted at the client computing device of the called party) will be terminated.

However, if at decision block 620, the signals in block 615 do not contain a "Failed" response signal, then the example 600 continues to block 630 where a SIP ringing (180) response is received. . After the call is answered by the callee, at block 635 the routine 600 receives a SIP OK (200) response indicating a successful transaction. Although not explicitly illustrated, if the callee does not answer, the example 600 may eventually obtain an OK response wait timeout (rather than proceeding to block 635), causing the example 600 to end.

At block 640, the example 600 receives a PSTN "Established" signal from the PBX/RCC. In response thereto, the example 600 sends a SIP ACK indicating that a SIP dialog has been established (block 645). The SIP dialog can then continue during or after the call. This can be used to send messages (ie, caller ID messages, call bias messages, call waiting messages, etc.) without relying on PSTN messaging.

Figure 7 is a flow chart illustrating a SIP at the callee computing device for establishing a call associated with a telephone call Example 700 of the conversation. The example 700 is enabled when a caller attempts to place a call using a communication application at its client computing device. At block 705, after the client of the Talker has attempted to establish a connection with a client computing device of a recipient, the Instance 700 receives a SIP INVITE message, which may be, for example, sent from a role. Medium communication server. This scenario assumes that the called party's client computing device is configured to perform SIP communications. If not, the phone call feature of the call can continue, but the SIP dialog is not established.

At block 710, the example 700 generates and sends a "SIP Session Progress" (183) response from the server indicating that a SIP signaling phase session is initiated. At block 715, the example 700 receives a "PSTN Delivered" signal indicating that a call has been placed on the PSDN on the PSDN. This signal can be communicated between the example 700 and the PBX either directly or through a remote call control (RCC) interface. If the instance receives a SIP Cancel at the decision block 720, this indicates that the Talker client has detected a PSTN call setup failure and will not perform further SIP communication (let the example 700 end) ). However, if a SIP cancel message is not received at decision block 720, the SIP communication continues to block 725 where the example 700 generates and sends a SIP ring (180) response.

After the called party has answered the call, at block 730, the example 700 generates and sends a SIP OK (200) response, which Indicates that a successful SIP transaction has occurred. Although not explicitly stated, if the callee does not answer, the example 700 may eventually obtain an OK response wait timeout (rather than proceeding to block 730) and terminate with the example 700.

At block 735, the example 700 receives a PSTN "Established" signal from the PBX/RCC. Assuming that the originating client also receives a similar signal, the example 700 receives a SIP ACK indicating that a SIP talk phase session has been established (block 740). The established SIP dialog can then continue during or after the call. This can be used to send messages (ie, caller ID messages, call bias messages, call waiting messages, etc.) without relying on PSTN messaging.

The subject matter is described in terms of structural features and/or methodological acts in a particular language, and it is understood that the subject matter defined in the scope of the appended claims is not necessarily limited to the specific features or acts described. Rather, the specific features and acts described above are disclosed as examples of the scope of the application. Accordingly, the invention is not limited except as claimed in the appended claims.

100‧‧‧Active communication server

135‧‧‧ Internet

105‧‧‧Current server

150‧‧‧Client A

110‧‧‧User data server

175‧‧‧Client B

115‧‧‧Subscription component

155‧‧‧Communication application

120‧‧‧Current file repository

160‧‧‧Subscription component

125‧‧‧Contact List Library

165‧‧‧ Login component

130‧‧‧PSTN network

170‧‧‧User interface components

175‧‧‧Client

180‧‧‧Phone

320‧‧‧"Make Call" response signal

185‧‧‧Traditional PBX

190‧‧‧Phone

325‧‧‧"Originated" signal

195‧‧‧Traditional PBX

330‧‧‧"Delivered" signal

200‧‧‧SIP dialogue establishment procedure

335‧‧‧"Failed" signal

205‧‧‧SIP INVITE message

340‧‧‧SIP CANCEL message

210‧‧‧SIP 183 response

345‧‧‧"Established" signal

215‧‧‧"Make Call" service request signal

400‧‧‧INVITE message

405‧‧‧IP header

220‧‧‧"Make Call" response signal

410‧‧‧TCP header

412‧‧‧SIP message

225‧‧‧"Originated" signal

415‧‧‧Request column

230‧‧‧"Delivered" signal

420‧‧‧"From" header

235‧‧‧"Delivered" signal

425‧‧‧"To" header

240‧‧‧SIP 180 response

430‧‧‧"Caller Tel URI" header

245‧‧‧SIP 200 OK response

250‧‧‧"Established" signal

435‧‧‧"Called Tel URI" header

255‧‧‧"Established" signal

260‧‧‧SIP ACK

440‧‧‧"Supplemental Caller ID" header

300‧‧‧SIP dialogue establishment procedure

305‧‧‧SIP INVITE message

445‧‧‧"Call Type" header

310‧‧‧SIP 183 response

450‧‧‧"Supported" header

315‧‧‧"Make Call" service please Signal

455‧‧‧"Content-Length" head

500‧‧‧INVITE response

532‧‧‧"Called Tel URI" header

505‧‧‧IP header

510‧‧‧TCP header

533‧‧‧"Status" header

515‧‧‧SIP message

535‧‧‧"CSeq" header

520‧‧‧SIP Response ID

540‧‧‧"Supported" header

525‧‧‧"To" header

545‧‧‧"Content-Length" header

530‧‧‧"From" header

531‧‧‧"Caller Tel URI" head

Figure 1 is a block diagram illustrating elements of a system for associating a telephone call to a SIP dialog in a particular embodiment.

Figure 2 shows a networking diagram showing In a specific embodiment, a communication flow for establishing a SIP conversation is associated with a telephone call.

Figure 3 is a network operation diagram showing the communication flow for establishing a SIP conversation associated with a telephone call in the presence of a competition situation.

Figure 4 shows the contents of a SIP INVITE message sent from a client client in a particular embodiment.

Figure 5 shows the contents of a SIP INVITE response message sent from a recipient client in a particular embodiment.

Figure 6 is a flow diagram illustrating an example in a particular embodiment for establishing a SIP dialog associated with a telephone call at a talker computing device.

Figure 7 is a flow diagram illustrating an example in a particular embodiment for establishing a SIP dialog associated with a telephone call at a subscriber computing device.

100‧‧‧Active communication server

105‧‧‧Current server

110‧‧‧User data server

115‧‧‧Subscription component

120‧‧‧Current file repository

125‧‧‧Contact List Library

130‧‧‧PSTN network

135‧‧‧ Internet

150‧‧‧Client A

175‧‧‧Client B

155‧‧‧Communication application

160‧‧‧Subscription component

165‧‧‧ Login component

170‧‧‧User interface components

175‧‧‧Client

180‧‧‧Phone

185‧‧‧Traditional PBX

190‧‧‧Phone

195‧‧‧Traditional PBX

Claims (20)

A computer readable storage memory for storing computer executable instructions for controlling a device of a callee to provide a telephone call notification constructed on a public telephone network, such Computer-executable instructions for controlling the device of the callee to perform a method, the method comprising the steps of: receiving a first computer network out-of-band with respect to the public telephone network a message indicating that a caller wants to initiate a telephone conversation with one of the recipients via the public telephone network; after receiving the first message, sending a response via the computer network, Responding to indicate that the device of the callee has received the first message; and after transmitting the call to the callee via the public telephone network, receiving a second message via the computer network, the second message indicating that The telephone conversation delivered to the callee is from the talker; and after receiving the second message, the caller is notified that the delivered telephone call is from the talker. The computer readable storage memory of claim 1, wherein the first message and the second message are from the Talker A device sends. The computer-readable storage memory of claim 2, wherein the second message is sent after the device of the caller receives the notification that the telephone call has been delivered to the callee. The computer readable storage memory of claim 1, wherein the callee answers the telephone call after being notified that the telephone conversation is from the Talker. The computer readable storage memory of claim 1 wherein the recipient answers the telephone conversation before being notified that the telephone conversation is from the Talker. The computer-readable storage memory of claim 1, wherein the first message, the response, and the second message conform to a dialog initiation protocol. The computer readable storage memory of claim 1, wherein the method further comprises the step of, after receiving the first message, notifying the recipient that a telephone call from one of the talkers is expected to be delivered. The computer readable storage memory according to claim 1, wherein the method further comprises the step of: after transmitting the telephone call, sending a second response via the computer network, the second response indicating a call The call has been delivered to the callee. A computer readable storage memory for storing computer executable instructions for controlling a device of a callee to provide a caller from the caller to the caller on a public telephone network a telephone call notification, the computer executable instructions for controlling the device of the callee to perform a method, the method comprising the steps of: receiving a message for a network of out-of-band computers relative to the public telephone network And after the device of the Talker receives the call that has been transmitted by the public telephone network to the callee, the device sends the message by the Talker, and the message indicates that the call is from the utterance And after receiving the message, the caller is notified that the delivered call is from the caller so that the callee knows the identity of the caller before answering the call. The computer readable storage memory according to claim 9, wherein the method further comprises the following steps: Receiving a first message via the computer network, the first message indicating that the caller wants to initiate a call with the callee via the public telephone network; after receiving the first message, via the computer network Sending a response indicating that the device of the callee has received the first message. The computer readable storage memory as described in claim 9 wherein the message conforms to the response initiation agreement. The computer readable storage memory according to claim 9, wherein the method further comprises the step of: after transmitting the telephone call, sending a response via the computer network, the response indicating that a telephone call has been delivered to The recipient. A device for providing a call from a caller to a caller of a caller, the call being constructed on a public switched telephone network, the device comprising: a storage memory, The storage memory stores computer executable instructions, the computer executable instructions comprising: a receiving pre-delivery message component, the receiving pre-delivery message component being a computer network outside the band via the public switched telephone network The network receives a pre-delivery message, the pre-delivery message Representing that the caller wants to initiate a telephone conversation with one of the recipients via the public switched telephone network; a sending response component that sends a response via the computer network after receiving the pre-delivery message, Responding to indicate that the device of the callee has received the post-delivery message; and a post-received message component, the post-received message component receives a post-delivery message via the computer network, and the post-delivery message indicates from the caller The telephone call has been delivered to the callee; and a first notification component, after receiving the post-delivery message, notifying the callee that the delivered telephone call is from the caller; and a processor, The processor is operative to execute the computer executable instructions stored on the storage memory. The device of claim 13, wherein the pre-delivery message and the post-delivery message are transmitted from the Talker device. The device of claim 13, wherein the post-delivery message is sent after the device of the caller receives the notification that the telephone call has been delivered to the callee. The device of claim 13, wherein the callee answers the telephone call after being notified that the telephone conversation is from the talker. The device of claim 13, wherein the callee answers the telephone call before being notified that the telephone conversation is from the talker. The device of claim 13, wherein the pre-delivery message, the response, and the post-delivery message conform to a dialog initiation protocol. The device of claim 13, further comprising: a second notification component, after receiving the pre-delivery message, notifying the recipient that an incoming call from the caller is expected to be delivered. The device of claim 13, further comprising: transmitting a second response component, the transmitting second response component transmitting a second response via the computer network after transmitting the telephone call, the second response indicating A phone call has been delivered to the callee.